148681291 has 12 divisors (see below), whose sum is σ = 163749600. Its totient is φ = 134897840.

The previous prime is 148681283. The next prime is 148681297. The reversal of 148681291 is 192186841.

148681291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 148681291 - 2³ = 148681283 is a prime.

It is a super-2 number, since 2×148681291² = 44212252586853362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148681297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86145 + ... + 87853.

It is an arithmetic number, because the mean of its divisors is an integer number (13645800).

Almost surely, 2^148681291 is an apocalyptic number.

148681291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

148681291 is a deficient number, since it is larger than the sum of its proper divisors (15068309).

148681291 is a wasteful number, since it uses less digits than its factorization.

148681291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450 (or 2439 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 148681291 is about 12193.4937979235. The cubic root of 148681291 is about 529.7676577426.

The spelling of 148681291 in words is "one hundred forty-eight million, six hundred eighty-one thousand, two hundred ninety-one".